Apparatus for regulating fluid fuel



Sept l, 1925. A 1,551,651

, C. O.'EVERHART APPARATUS Fon REGULATING FLUID FUEL Filed March 1s. 1919 r.2 sums-snm 1 Y ay. M v WGSHM sept. 1, -192s.' 1,551,651

C. O. EVERHART APPARATUS FOR REGULATING FLUID FUEL Patented Sept. 1, 1925..

UNITED STATES y 1,551,651 PATENT OFFICE.

CHARLES o. nvEiuAR'i, or WARREN PENNSYLVANIA, 'AssIGNoR 'ro HIGH Low nEeaILATOacoivirANir,l A CORPORATION or PENNSYLVANIA.

YAIIARA'JIUS Fon anodinA'rINev FLUID FUEL.'

' s Appiicationjniea March 19,1919. seriai No'. 283,583.

boilers it is desirable, first.y tofeed the pro-perf quantity of fluid 'fuelV mixture for maintaining normal working boiler pressure andv at the same time to have the ingredients present in the mixture in proper ratio for economical and eflicie-nt combustion,- second, to reduce and increasethe quantity of mixture supplied at boiler pressures above and belowV normal working pressures respectively, butl ly departing 1 .from the fV :without materia n proper ratio of ingredients in the mixture and without extinguishing combustion, andv i third, to regulate the pressure'of the constitbustion. Y

Apparatus embodyingfeatures of my inventionis capable of use in performing all `those objects and that. is one ofits advantages, but, in whole for in part, it is 4capable Vof other uses in caseswhere heating by the v combustionofV fluid' fuel is involved.

i The principal objects of the present inven- 4 tion are, first, to provide for accuracy of adjustment and convenience invrepairs, second, to adgustably limit the `increase and reduc-` tion of the fuelfsupply in respect to the `quantity of fuel fed at constant pressure for any pre-determined boilerpressure, without f disturbing the vpreviously fixed adjustment tion,l of apparatusy embodying Vfeatures of,- the invention.

I Fig. 2 is an enlarged4 sectionalfview of one `of the casings shown Fig." 1. Y

Fig. 3 is a side view drawn to vareduced scale and .illustrating a modification.

Fig. 4 is agtop or plan view showing a modification, and

l Fig. 5 is a diagrammatic view.

In the drawings, 1 isa casing having a fluid way 2, and a. transverse opening 3, extending through it. T he casing is shown as provided with externally threaded portions 4, which. is a matter of convenience in pipe fitting.. 5, is a calibrated orifice plate interpQsedin the `fluid way 2, and insertable and removable through the Opening 3. 6, is a rek,

movable spider-cap for closing one of kthe ends. .It is called a spider-cap because of the openings in it which permit of fluid flow.V `6*", is afwasher as of metal and fabric,

inserted between a flange ofthe cap and the top ofthe casing for making an air tight joint. The casing vis provided with a threaded extension 6c, adapted to receive a nut 6d, by means of which itis secured in place on the rframe 13. 7, isla stem arranged through the f lother end of the opening 3, and removable through that opening when the plater 5, and cap 6, have been removed. The stem 7 is provided with a `pointed end 8, co-operating with the orice but not intended in `normal operation to close-it'. V9, is acarrier movable towards and awayfrom the 'casings y1, for there may be more duplicate casings than one and their accessories, although only one has been described. The stem 7, passes through a hole in thev carrier and is' movable in respect thereto, butrsuch movement is controlled by e an adjusting nut 9a., and by a spring 10, bearing uponthe Vcarrier and by` a second nut 11, on the ste-in. 12, are glands carried by the extensions 6C. In the following description" and claims reference will be made to oil and tively rough adjustmentof proportions ofy i-oil, passing for example, through the fluid way of the leftha-nd casingin Fig. 1, and steam, passing through t-he -other casing, in

'the mixture can be made by mounting a ppro- .l priately calibratedl orifice plates 5, inA the respective casings. A iiner or more accurate adjustment can be made by the nuts 9, acting against the springs 10. It the carrier 9, be moved toivards the casingsl, from theposition which it occupies normally, or which it occupies at normal boiler pressure, the pointed ends 8, of the stenosi?, reduce, the ei'ective4^ size of the orifice and sofcuti doivn the 'qualif n tity of oil aiidsteamminaterially u'nbala'iic` 111s tho proportions in. the mist-uro, butthat;

1s not importantso long as combustion is maintained, and combustion is always main?. tained because the stems are not permitted to completely close the orifices for example by limiting thetr'avel of; the carrier`9, as will be hereinafter described. Iffthe carrier 9, be moved from the position above indicated as norma-l position and-away fromv the casings 1, the retrograde movement o t the pointed ends 8, ot the stems increases the effective size of the orifices and soA increases the quantityA of= oil. and steam, immaterially unbalancing the proportions in the mixture. Whenever the carrier is returnedtoits normal position the proportions in the mixture are restored to the, adjusted ratio Which may be that best suited for complete or efiicient combustion. Again the ratio forv normal combustion can be readily re-adj-usted. by replacing the orifice plates with others having oriiices of different size, and re-adjusting the stems as desired. The orifice plates and the stems are partsthat may require removal and they can be readily removed by removing the caps 6.

The carrier 9, may be. adjusted and` moved.

in respect to the; casings 1, in response to pressure changes as of theY boi-ler, er other- Wise. Referring to-Fig. l, usel is made ofmeans responsive to pressure'changes. Pressure admitted to diaphragmchamber X, at inlet 14, on one faceof the diaphragm 15, is

opposed by a spring 1-6, of which the tension` is adjustable by the screw 17, acting ona block'19, upon Which the spring bears. The rod' 20, is operated by the diaphragm and for this purpose it is shown ais-provided with a head` 19a, upon Which the spring 16, bears, and the4 range of movement of the rod-vis limited by the .nuts 2L and` 22. 23', and 24, are adjusting nuts` for adjustingand connecting the carrier 9, on the rod 20, In` Fig. 3, the rod 20?, isturnadole and endwise immovable in-the trame 13a, and is provided with a hand Wheel? 25. The rod 2 0?, is threaded and Works through a threaded opening inthe carrier 9, and the nuts 26 and 27, limit the range of travel of the` carrier.

The springs 10,'servetorelieve the carrier from tilting stress, because they can yield if. the movement oa stem, 7, should be un? duly retarded. l

A description will now be given of the mode of opera-tion of oneA coiripieteV embodiment of the invention adapted to accomplish all the objects set forth at the beginning of this speciiication.Y and from it those skilled in the art will understand how to use the invention for the-accomplishment of less, than all of those objects.

Three sets of casings and their auxiliary pressure operated stems are employed. In Iilig. 5the three sets. are indicated A', B, C. Theset A, serves to regulate the pressure of stearlltiv and to` supply it at constant pressure to the set C, and the set B, serves to regulate the pressure of oil and to supply it at constant pressure to the set C. The set C, supplies a regulated mixture in regulated quantity to the combustion chamber ofthe boiler 30. In this Way the mixture aproprately supplied for combustion and anger of blowing out the iame is avoided. Referring to Figs. 4 and 5, t-he inlets of the fluid Ways of the casings 1,`:of the set A, are connected to the boiler pressure as by a pipe 3l, leading to' a steam line 32, through branchesV 33, having valvesY 34, used forV stopping and starting. The outlets ot these Huid Ways are connected through valved branches 35'to a pipe 36, leading to the fluid Way. of the steam casing of the set C. vThe diaphragm chamber. X, ot the set. A, is conn nected to the outlet side of the set, as by a pipe 37, branching from the pipe '36, in orde-r to.y keep the -outlet pressure substantially. constant by varying vthe effective size ot the orifices through the instrrunentality of the stems as liasbeendescribed. The piping .at theset B, is the same as at set A, Iexcept that the steam line 36a, leads to the oil pump 38, and the diaphragm chamber is connected by a pipe 37 a, to the oil line 39, that leadsr from the'outlet of the pump to the oil casing 1, of the set C).` Thus variations in'the oil pressure regulatel` the steam supplyo-l the pump in such a Way that it keeps; the oil pressure substantially constant. 40, are et-cocks for venting the diaphragm cham ers when the apparatus is shut down. The apparatus ateach set A and B, is adjusted in the manner described to. supply both the oil and the steam or air to the set C, at any required constant pressure and the apparatus at set C, is adjusted to supply the desired ratio ot oil and steam and to regulate the quantity of mixture to keep the boiler pressure constant as determinedby the setting of the spring 16, Within permissible limits of variation' determined by the setting of the adjustable stop 'nuts 21 and 22, the setting yo :E which in no Way interferes with any other adjust! ments and fixes thev length of the stroke'of the stems in any degree required.

1. In apparatus of the class described the combi-nation of a plurality of independentI casings each having a fluid lWay, adapted yfor the removable rece tion of an orifice, plate, an opening provided in the Wal-l of each casing and-opposed to the valve stem and effective areas, and means for adjusting each stein in respect to the carrier. to accurately fix the flow relation,l substantially as described.

2. In apparatus of the class described thek combination of a frame, a carrier arranged in and clear of the frame, means for moving( the carrier in respect tov the frame, casings carried bythe frame and having fluid ways, stems co-operating with the fluid ways and carried by and movable in respect tol the carrier, adjusting nuts for limiting the movement of each of the stems in respect to p the carrier and towards the fluid ways, and springs biasing the stems against the restraint of the nuts and operative to restore the stems to adjusted position in respect t0 the carrier.

3. In apparatus of the class described the combination of casings having fluid ways, a carrier movable towards and away from the casings,V stems co-operating with the fluidrways and carried by and movable in respect to the carrier, adjusting nuts for limiting the movement of each of the stems in respect to the carrier and towards the fluid ways,y and springs biasing the stems against the restraint of the nuts and'operative to restore the stems to adjusted position in respect tothe carrier.

' 4:. In apparatus of the class described the combination of a plurality of casings each j having a fluid way and a transverse opening, calibrated orifice plates interposed in the fluid ways and removable through said openings, detachable spider-caps for closing one ofthe ends-of said openings and for retaining the plates, stems arranged through the ends of said openings and removable through said openings when the caps are detached and provided with pointed ends co-A operating with the orifices, a carrier having detachable and adjustable and spring connection with each stem, a frame for the casings, and a rod for positioning the carrier in respect to the frame, substantially as describe c CHARLES o.y EVERHART. 

